CN114733301A

CN114733301A - Oil mist filter

Info

Publication number: CN114733301A
Application number: CN202210672954.1A
Authority: CN
Inventors: 孙平; 孙敏
Original assignee: Suzhou Hanter Environmental Engineering Co ltd
Current assignee: Suzhou Hanter Environmental Engineering Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-07-12

Abstract

The application relates to the field of waste gas treatment, in particular to an oil mist filter, which comprises a box body, wherein an air inlet and an air outlet are formed in the box body; the oil mist filter is characterized in that a filter layer for filtering oil mist and a pressing assembly for pressing the filter layer are arranged in the box body, the filter layer and the pressing assembly are located between the air inlet and the air outlet, and the filter layer is filled with hydrophobic and oleophilic organic polymer fibers. This application has the effect that reduces the frequency of changing the filter screen.

Description

Oil mist filter

Technical Field

The application relates to the field of waste gas treatment, in particular to an oil mist filter.

Background

In the metal processing processes of turning, milling, drilling, grinding and the like, a large amount of oil mist oil drops can be formed in gas due to the use of metal cutting fluid, and the production environment of a factory and the health of workers are affected. Therefore, the control of the oil mist concentration in the metal processing workshop is an important measure related to the occupational safety and sanitation of a production enterprise.

At present, in order to avoid the influence of the oil mist oil smoke on the environment, an oil mist filter is often adopted by machining enterprises to purify the gas in a workshop. Common oil mist filters generally adopt filter screens containing layer-by-layer overlapped filling fibers to filter gas, but the surface area of the filter screens in direct contact with oil drops is limited, the dirt carrying capacity is small, and the filter screens can block meshes due to the gathering of the oil drops after being used for a long time, so that the air intake is reduced, and the filter screens need to be frequently replaced. The frequent replacement of the filter screen will undoubtedly further increase the production cost of processing enterprises and increase the maintenance cost.

To this end, the present application provides an oil mist filter to solve the above problems.

Disclosure of Invention

In order to reduce the frequency of changing the filter screen, this application provides an oil mist filter.

The application provides an oil mist filter adopts following scheme:

an oil mist filter comprises a box body, wherein an air inlet and an air outlet are formed in the box body, a fan is arranged in the box body, an air inlet of the fan is communicated with the air inlet, and an air outlet of the fan is communicated with the air outlet; the oil mist filter is characterized in that a filter layer for filtering oil mist and a pressing assembly for pressing the filter layer are arranged in the box body, the filter layer and the pressing assembly are both located between the air inlet and the air outlet, and the filter layer is filled with hydrophobic and oleophilic organic polymer fibers.

By adopting the technical scheme, the hydrophobic and oleophilic organic polymer fiber has the characteristics of high oil absorption speed, high oil absorption rate and repeated use; the hydrophobic and oleophilic organic polymer fibers can adsorb oil drops in gas, and meanwhile, the gaps among polymer molecules and the gaps among the fibers can adsorb the oil drops and wrap the oil drops, so that the oil drops in the gas can be removed; after organic polymer fiber has absorbed a certain amount of oil, press the subassembly and can press organic polymer fiber to organic polymer fiber's adsorbed oil drop can be pressed and extruded, and back organic polymer fiber can continue the oil drop in the adsorbed gas, and then is favorable to reducing the frequency of changing the filter layer.

In a specific possible embodiment, the pressing assembly includes a hinge shaft, a first motor, and a pressing plate for pressing the filter layer; the hinge shaft is rotatably connected to the inner wall of the box body, the pressing plate is connected to the hinge shaft, an installation space is formed in the inner wall of the box body, and the first motor is connected to the inner wall of the box body and located in the installation space;

the articulated shaft is connected with a turnover gear, the turnover gear is coaxial with the articulated shaft, a rotating shaft of the first motor is provided with a driving gear, and the driving gear is meshed with the turnover gear.

By adopting the technical scheme, the rotating shaft of the first motor can drive the turnover gear to rotate through the driving gear, so that the pressing plate is driven to rotate around the hinge shaft, and the filtering layer can be pressed or separated; when the filter layer is pressed by the pressing plate, oil drops adsorbed by the organic polymer fibers can be pressed and extruded.

In a specific possible embodiment, the pressing assembly includes a guide rod, a screw rod, a second motor; two ends of the guide rod are respectively connected to two opposite inner walls of the box body, and the guide rod is parallel to the plane of the filter layer; the guide rod and the screw rod are parallel to each other, one end of the screw rod is rotatably connected to the inner wall of the box body, the other end of the screw rod penetrates through the side wall of the box body and then is connected with a rotating shaft of a second motor, and the second motor is arranged on the outer wall of the box body;

the pressing assembly further comprises a mounting bracket and a roller for pressing the filter layer, the roller is rotatably connected to the mounting bracket, and the rotating axis of the roller is perpendicular to the guide rod; the mounting bracket is provided with a through hole, and the guide rod penetrates through the through hole; the screw rod penetrates through the mounting bracket and is in threaded connection with the mounting bracket.

By adopting the technical scheme, the roller can press the filter layer, so that oil drops adsorbed by the organic polymer fibers can be pressed and extruded; the pivot of second motor drives the lead screw and rotates to can drive the installing support and slide on the guide bar, and then can drive the running roller and roll on the filter layer and press the different positions of filter layer, be favorable to more fully pressing the adsorbed oil droplet of organic polymer fibre and extrude.

In a specific embodiment, the organic polymer fibers are selected from one or more of polypropylene fibers, alkyl ethylene polymer fibers, and polyurethane foams.

In a specific implementation mode, a plurality of springs are arranged in the filter layer, and the stretching directions of the springs are perpendicular to the plane of the filter layer.

Through adopting above-mentioned technical scheme, press the subassembly and press the filter layer after, the spring helps the filter layer to resume deformation.

In a specific possible embodiment, a plurality of baffle plates are arranged on the inner wall of the box body and positioned below the filter layer, and the plurality of baffle plates are positioned above the air inlet; and a plurality of baffle plates are distributed in a staggered manner in the vertical direction.

By adopting the technical scheme, when the gas containing the oil mist flows through the baffle plate, oil mist droplets collide with the baffle plate due to inertia and are attached to the baffle plate, so that the separation of the oil mist in the gas is facilitated.

In a specific possible embodiment, the inner wall of the tank is provided with a corrugated plate coalescer below the filter layer, the corrugated plate coalescer being above the baffle.

By adopting the technical scheme, when gas flows through the corrugated plate coalescer at a certain speed, part of oil drops collide with the corrugated plate under the action of inertial impact and are attached to the surface of the corrugated plate, so that the aggregation of the oil drops on the filter layer is reduced, and the frequency of replacing the filter layer is favorably reduced; the oil drops which are not removed are collided with each other at a plurality of subsequent turns to make the oil drops larger and larger, so that the oil drops are easier to be captured by the filter layer, and the oil mist separation efficiency is greatly improved.

In a specific possible embodiment, an HPEA filter screen is arranged in the box body and above the pressing component, and the HPEA filter screen is located below the air outlet.

By adopting the technical scheme, the HPEA filter screen can filter oil drops of PM2.5 level, and the gas purifying capacity of the oil mist filter is improved.

In a specific possible embodiment, the lower end of the box body is provided with a liquid collecting tank, the liquid collecting tank is located below the air inlet, and the box body is provided with a liquid outlet which is communicated with the liquid collecting tank.

Through adopting above-mentioned technical scheme, the collecting tank can be collected and is filtered out oil and drip, can be with the waste liquid discharge in the collecting tank through the liquid outlet.

In a specific practical implementation scheme, the air conditioner further comprises an air inlet pipe arranged on the outer wall of the fan and a nozzle arranged on the inner wall of the air inlet pipe, wherein the air inlet pipe is communicated with the air inlet, and the nozzle is communicated with the water pipe.

By adopting the technical scheme, the nozzle can spray water to the gas passing through the air inlet pipe, and dust particles in the gas can be gathered and settled after being humidified, so that the gathering of dust on the filter layer is reduced, and the frequency of replacing the filter layer is favorably reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the hydrophobic and oleophilic organic polymer fiber can adsorb oil drops in gas, so that the oil drops in the gas can be removed; the pressing component can press and extrude oil drops adsorbed by the organic polymer fibers, and then the organic polymer fibers can continue to adsorb the oil drops in the gas, so that the frequency of replacing the filter layer is reduced.

2. The nozzle can spray water to the gas passing through the air inlet pipe, so that dust particles in the gas are gathered and settled, the gathering of dust on the filter layer is reduced, and the frequency of replacing the filter layer is reduced.

Drawings

FIG. 1 is a schematic perspective view of an oil mist filter in example 1 of the present application.

FIG. 2 is a schematic perspective view of the inside of an oil mist filter in example 1 of the present application.

Fig. 3 is a perspective view of an over-spring in embodiment 1 of the present application.

Fig. 4 is a partially enlarged view of a portion a in embodiment 1 of the present application.

FIG. 5 is a schematic perspective view of the inside of an oil mist filter in example 2 of the present application.

Description of reference numerals:

11. a box body; 12. an air outlet; 13. an air inlet pipe; 14. a fan; 15. a partition plate; 16. an installation space; 17. a nozzle; 18. an air inlet; 19. a liquid outlet; 21. a liquid collecting tank; 22. a baffle plate; 23. a corrugated plate coalescer; 24. a filter layer; 25. a spring; 26. an HPEA filter screen; 31. a pressing plate; 32. hinging a shaft; 33. a drive gear; 34. turning over a gear; 35. a first motor; 36. a second motor; 37. mounting a bracket; 38. a roller wheel; 39. a guide rod; 40. and a screw rod.

Detailed Description

The present application is described in further detail below with reference to fig. 1-5.

The application provides an oil mist filter.

Example 1

Referring to fig. 1 and 2, the oil mist filter comprises a box body 11, wherein a liquid collecting groove 21 is formed at the lower end of the box body 11, and a liquid outlet 19 communicated with the liquid collecting groove 21 is formed in the box body 11; an air inlet 18 positioned above the liquid collecting tank 21 is formed in the box body 11, an air inlet pipe 13 communicated with the air inlet 18 is arranged on the outer wall of the box body 11, and a nozzle 17 communicated with a water pipe is arranged on the inner wall of the air inlet pipe 13. The nozzle 17 can spray water to the gas passing through the air inlet pipe 13, and dust particles in the gas can be accumulated and settled after being humidified, so that the accumulation of the dust on the filter layer 24 is reduced, and the frequency of replacing the filter layer 24 is favorably reduced.

Referring to fig. 2, a plurality of baffle plates 22 are connected to the inner wall of the box 11 and located above the air inlet 18, and the baffle plates 22 are distributed in a staggered manner in the vertical direction. When the gas containing the oil mist flows through the baffle 22, oil droplets are attached to the baffle 22 by colliding with the baffle 22 due to inertia, thereby facilitating separation of the oil mist from the gas.

The inner wall of the box body 11 is connected with a corrugated plate coalescer 23 positioned above the baffle plate 22, when gas flows through the corrugated plate coalescer 23 at a certain speed, part of oil drops collide with each other at a plurality of bends to make the oil drops larger, so that the oil drops are easier to be captured by the filter layer 24; part of the oil drops collide with the corrugated plate due to inertia impact and are attached to the surface of the corrugated plate, so that the accumulation of the oil drops on the filter layer 24 is reduced, and the frequency of replacing the filter layer 24 is reduced.

Referring to fig. 2 and 3, a filter layer 24 positioned above the corrugated plate coalescer 23 is connected to the inner wall of the tank 11, and organic polymer fibers having hydrophobicity and lipophilicity are filled in the filter layer 24 and are formed by mixing polypropylene fibers, alkyl ethylene polymer fibers and polyurethane foam. The hydrophobic and lipophilic organic polymer fibers can adsorb oil drops in gas, and meanwhile, gaps among polymer molecules and gaps among the fibers can adsorb the oil drops and wrap the oil drops, so that the oil drops in the gas can be effectively removed. The filter layer 24 is provided with a plurality of springs 25, the extension and contraction directions of the springs 25 are all vertical to the horizontal plane, and the springs 25 help the filter layer 24 to keep a certain shape.

Referring to fig. 2 and 4, two pressing components located above the filter layer 24 are arranged on the inner wall of the box body 11, the two pressing components are oppositely arranged and located at the same height, each pressing component comprises a hinge shaft 32 and a pressing plate 31, the hinge shaft 32 is connected to the inner wall of the box body 11 through a bearing, and the pressing plate 31 is connected to the hinge shaft 32.

The pressing assembly further comprises a first motor 35 connected to the inner wall of the box body 11, the box body 11 is provided with an installation space 16, and the first motor 35 is located in the installation space 16; a reverse gear 34 coaxial with the hinge shaft 32 is connected to the hinge shaft 32, and a drive gear 33 engaged with the reverse gear 34 is connected to a rotation shaft of the first motor 35. Thus, the pressing plate 31 can rotate around the hinge shaft 32 under the action of the first motor 35, and the pressing plate 31 can press or separate from the filter layer 24; when the pressing plate 31 presses the filter layer 24, oil drops adsorbed by the organic polymer fibers can be pressed and extruded out, and after the pressing plate 31 leaves the filter layer 24, the organic polymer fibers can continue to adsorb oil drops in the gas, so that the frequency of replacing the filter layer 24 is reduced.

Referring to fig. 2, the HPEA filter screen 26 is connected to the inner wall of the case 11 above the pressing plate 31, a space for accommodating the pressing plate 31 in a vertical state is left between the HPEA filter screen 26 and the filter layer 24, and the filter grade of the HPEA filter screen 26 is H13. The HPEA filter screen 26 of the grade H13 can effectively filter oil drops of the grade PM2.5, and the capacity of purifying gas of the oil mist filter is improved.

The inner wall of the box body 11 is connected with a partition plate 15 positioned above the HPEA filter screen 26, a through hole is formed in the partition plate 15, a fan 14 is arranged on the top surface of the partition plate 15, and an air inlet of the fan 14 is communicated with the through hole; an air outlet 12 positioned above the fan 14 is formed in the top of the box body 11, and an air outlet of the fan 14 is communicated with the air outlet 12. Under the action of the fan 14, the air can enter from the air inlet 18, and passes through the baffle plate 22, the corrugated plate coalescer 23, the filter layer 24 and the HPEA filter screen 26 in sequence, and finally is discharged from the air outlet 12.

The implementation principle of the oil mist filter of the embodiment of the application is as follows:

the baffle 22 can separate oil drops in the gas, which is beneficial to reducing the accumulation of the oil drops on the filter layer 24, thereby being beneficial to reducing the frequency of replacing the filter layer 24; under the action of the corrugated plate coalescer 23, oil drops collide with each other to increase the particle size, so that the oil drops are more easily captured by the filter layer 24, the oil drops are favorably reduced from being accumulated on the HPEA filter screen 26, and the frequency of replacing the HPEA filter screen 26 is favorably reduced.

The hydrophobic and oleophilic organic polymer fiber has the characteristics of high oil absorption speed and high oil absorption rate, and can be repeatedly used for many times; after organic polymer fiber absorbed a certain amount of oil drop, press the board 31 and can press organic polymer fiber to organic polymer fiber's adsorbed oil drop can be pressed and extruded, press board 31 to leave behind filter layer 24, organic polymer fiber can continue the oil drop in the adsorbed gas, and then is favorable to reducing the frequency of changing filter layer 24.

Example 2

Referring to fig. 5, the present embodiment is different from embodiment 1 in that the pressing member includes a mounting bracket 37 and a roller 38 abutting on the top surface of the filter layer 24, the rotation axis of the roller 38 is parallel to the horizontal plane, and the roller 38 is connected to the mounting bracket 37 through a bearing. The pressing assembly further comprises a screw rod 40, a second motor 36 and two guide rods 39, the second motor 36 is connected to the outer wall of the box body 11, the guide rods 39 and the screw rod 40 are both horizontally arranged, and the guide rods 39 and the screw rod 40 are both vertical to the rotating axis of the roller 38; two ends of the guide rods 39 are respectively connected to two opposite inner walls of the box body 11, two through holes are formed in the mounting bracket 37, and the two guide rods 39 respectively penetrate through one through hole; one end of the screw rod 40 is connected to the inner wall of the box body 11 through a bearing, the other end of the screw rod penetrates through the side wall of the box body 11 and then is connected with a rotating shaft of the second motor 36, and the screw rod 40 penetrates through the mounting bracket 37 and is in threaded connection with the mounting bracket 37.

The roller 38 can press the filter layer 24, so that oil drops adsorbed by the organic polymer fibers can be pressed and extruded; the rotating shaft of the second motor 36 drives the screw rod 40 to rotate, so that the mounting bracket 37 can be driven to slide on the guide rod 39, and the roller 38 can be driven to roll on the filter layer 24 to press different positions of the filter layer 24, which is beneficial to more fully pressing and extruding oil drops adsorbed by the organic polymer fibers.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An oil mist filter, characterized by: the air conditioner comprises a box body (11), wherein an air inlet (18) and an air outlet (12) are formed in the box body (11), a fan (14) is arranged in the box body (11), an air inlet of the fan (14) is communicated with the air inlet (18), and an air outlet of the fan (14) is communicated with the air outlet (12); the oil mist filter is characterized in that a filter layer (24) used for filtering oil mist and a pressing assembly used for pressing the filter layer (24) are arranged in the box body (11), the filter layer (24) and the pressing assembly are both located between the air inlet (18) and the air outlet (12), and the filter layer (24) is filled with hydrophobic and oleophilic organic polymer fibers.

2. An oil mist filter according to claim 1, characterized in that: the pressing component comprises a hinge shaft (32), a first motor (35) and a pressing plate (31) for pressing the filter layer (24); the hinge shaft (32) is rotatably connected to the inner wall of the box body (11), the pressing plate (31) is connected to the hinge shaft (32), the inner wall of the box body (11) is provided with an installation space (16), and the first motor (35) is connected to the inner wall of the box body (11) and is positioned in the installation space (16);

be connected with turnover gear (34) on articulated shaft (32), turnover gear (34) with articulated shaft (32) are coaxial, be provided with drive gear (33) in the pivot of first motor (35), drive gear (33) with turnover gear (34) meshing.

3. An oil mist filter according to claim 1, characterized in that: the pressing assembly comprises a guide rod (39), a screw rod (40) and a second motor (36); two ends of the guide rod (39) are respectively connected to two opposite inner walls of the box body (11), and the guide rod (39) is parallel to a plane where the filter layer (24) is located; the guide rod (39) and the screw rod (40) are parallel to each other, one end of the screw rod (40) is rotatably connected to the inner wall of the box body (11), the other end of the screw rod penetrates through the side wall of the box body (11) and then is connected with a rotating shaft of a second motor (36), and the second motor (36) is arranged on the outer wall of the box body (11);

the pressing assembly further comprises a mounting bracket (37) and a roller (38) used for pressing the filter layer (24), the roller (38) is rotatably connected to the mounting bracket (37), and the rotating axis of the roller (38) is perpendicular to the guide rod (39); the mounting bracket (37) is provided with a through hole, and the guide rod (39) penetrates through the through hole; the screw rod (40) penetrates through the mounting bracket (37) and is in threaded connection with the mounting bracket (37).

4. An oil mist filter according to claim 1, characterized in that: the organic polymer fiber is selected from one or more of polypropylene fiber, alkyl ethylene polymer fiber and polyurethane foam.

5. The oil mist filter according to claim 1, wherein: a plurality of springs (25) are arranged in the filter layer (24), and the stretching directions of the springs (25) are perpendicular to the plane where the filter layer (24) is located.

6. An oil mist filter according to claim 1, characterized in that: a plurality of baffle plates (22) positioned below the filter layer (24) are arranged on the inner wall of the box body (11), and the baffle plates (22) are positioned above the air inlet (18); the baffles (22) are distributed in a staggered way in the vertical direction.

7. An oil mist filter according to claim 6, characterized in that: and a corrugated plate coalescer (23) positioned below the filter layer (24) is arranged on the inner wall of the box body (11), and the corrugated plate coalescer (23) is positioned above the baffle plate (22).

8. An oil mist filter according to claim 1, characterized in that: be provided with in box (11) and be located HPEA filter screen (26) of pressing the subassembly top, HPEA filter screen (26) are located air outlet (12) below.

9. An oil mist filter according to claim 1, characterized in that: the liquid collecting tank (21) is arranged at the lower end of the box body (11), the liquid collecting tank (21) is located below the air inlet (18), a liquid outlet (19) is arranged on the box body (11), and the liquid outlet (19) is communicated with the liquid collecting tank (21).

10. The oil mist filter according to claim 1, wherein: the air conditioner is characterized by further comprising an air inlet pipe (13) arranged on the outer wall of the fan (14) and a nozzle (17) arranged on the inner wall of the air inlet pipe (13), wherein the air inlet pipe (13) is communicated with the air inlet (18), and the nozzle (17) is communicated with the water pipe.